Window construction



C. AND L. LERNER.

wmoow cousmucnon. APPLICATION FILED 1859, 1919.

1,359,397, Patented Nov. 16, 1920.

/8 K a z? A TTORNIL' Y.

UNITED STATES PATENT OFFICE.

CHARLES LERNER AND LOUIS LERNER, OF BRUNSWICK, NEW JERSEY. I

WINDOW cons'rnucrron.

Specification of Letters Patent.

Patented Nov. 16, 1920.

Application filed .Tune 9, 1919. Serial No. 302,965.

To all whom it may concern:

Be it known that we, CHARLES LERNER and LOUIS LERNER, subjects of the King of England, residing at New Brunswick, in the county of lvliddlesex and State of New Jersey, have invented new and useful Improvements in Window Construction, of which the following is a specification.

' This invention relates to window structures and has for one of its principal objects the provision of a means for raising, lowering and looking or retaining the sash at any desired position with relation to the frame.

in the form of window structures now in use, the sash is counterbalanced by means of weights having cords attached thereto which are trained over pulleys; this construction having many disadvantages due to the breaking of the cord or displacement of the same from the guide pulley, etc.

By the provision of a structure of the type herein described the operator may adjust the window sashes at will without the necessity of moving draperies, raising shades or screens as the manipulating means is positioned in convenient place on the window frame.

Another object of the invention is the provision of a structure of the class described including a selective means which is adapted to either raise, lower or look the sash against movement in either direction.

A further object of the invention is the provision of a structure of the class de' scribed provided with means which will allow the sashes to be raised and lowered for ventilating purposes and locked in these positions whereby an unauthorized person cannot gain access to the manipulating means or knob for increasing the opening between the sash and the frame.

Another object of the invention is the provision of a structure of the class described which will greatly simplify window constructions thereby reducing the expense of manufacture and installation.

With these and other objects in view which will be more apparent as the nature, purpose and operation of the invention is better understood reference is had to the following description, claims and to the accompanying drawings in which:

Figure 1 is an elevation of a window structure showing the improvement applied thereto,

F 2 is an enlarged sectional View illustrating the operating means.

Fig. 3 is a sectional view on a line 3-3 of Fig. 2.

Referring to the dr wings by reference characters 10 designates the window frame and 11 the sashes which are adapted to slide in suitable guides in the frame. The sashes 11 are preferably mounted on anti-friction wheels or rollers 12 which also serve as guide means for the sash in the frame. One side railof the sash is provided with rack teeth 13 which may either be formed in the said side rails or as a separate member secured thereto. The operating and locking mechanism which co-acts with the teeth 13 is contained within a housing 14 and includes a driving gear 15 and a driven gear 16, the latter being of substantially greater width than the former. The gear 15 is mounted on a transverse shaft 17 which is mounted in the housing 14 for transverse sliding movement and is provided with an operating knob 18 arranged exteriorly of the frame 10. In order to pro-. vide means for alternately permitting the shiftable gear 15 to raise and lower the sash through the medium of the gear 16, use is made of a pair of oppositely disposed pawls 20 which are mounted for independent swinging movement on the transverse shaft 21. The pawls 20 are separated on the shaft by means of a depending wall 22 which is longitudinally arranged within the housing 14: and a transverse shaft 23 is arranged in the housing slightly below the shaft 21 in order to provide a common stop means which co-acts with the vertical branches 24 of the pawls 20.

By this arrangement it will be seen that in operation of the device, when the gear 15 is shifted to a position intermediate of the width of the gear 16, the teeth thereon will co-act with both of the pawls 20 thereby locking the driving gear 15 against movement and retaining the sash in any one of its adjusted positions. By shifting the gear 15 so that it engages with only one of the pawls it will be understood that the driving gear 15 can be turned in one direction but is prevented by the pawl from being turned in the opposite direction, and, by shifting the gear 15 so that it co-acts only with the other pawl, an opposite result is accomplished. Each sash is adapted to i be provided with an independent means of raising and lowering the same and these devices are preferably but not necessarily arranged at opposite sides of the frame While we have illustrated and described a simple and preferred form of carrying said sash, a pinion on said frame adapted to co-ac't with said toothed portion, a relatively narrow gear engaging with said pinion, oppositely extending gear locking pawls, and means for shitting said gear for selectively engaging said pawls to lock the sash in raised or lowered position.

2. In a device of the class described, the

combination of a sash comprising a gear rack, 'a pinion mounted for engagement with said rack, a gear mounted for sliding engagement with said pinion and a pair of 'pawls, each cooperative with said gear for holding the gear against movement in a respective direction, said gear being slidable to engage either or both of said pawls. 3. In a device of the class described, the combination of a sash comprising a gear rack, a pinion mounted for engagement with said rack, a pair of depending pawls, a common stop for said pawls, and a gear adapted to engage said pinion and movable to position to engage one of said pawls and to position to engage both of said pawls.

' in testimony whereof we afiix our signatures.

CHAS. LERNER. LOUIS LERNER. 

